From http://www.decadesofstyle.com/:
"This eye-catching vintage pattern from the mid-century is named for the diamond shaped insets at the waistline. This is another house dress pattern but when they look this great - you can never have too many.
There is an invisible zipper at the center front, set in sleeves and large pockets below the insets. Contrasting fabric accents the collar, cuffs and insets."